Make the most of the insulation you already have.

When a top-up may make sense

Tell the assessor if rooms feel unevenly heated, your attic insulation looks patchy, or a previous renovation disturbed it. These observations help define the assessment; they do not establish the cause on their own.

What to check first

• Existing insulation type and condition.
• Signs of damp, roof leaks or pest activity.
• Safe access, ventilation paths and clearances.
• Air leakage and hatch insulation.

Ask for a written scope showing preparation, material, proposed depth or thermal performance, and how ventilation will be protected.

Further reading: Natural Resources Canada — insulation materials. Advice here is general; your contractor must assess the actual attic.